|Back to basics.|
Connect your PC direct to your modem. Check you can get internet.
Start up Command Prompt.
Enter the following:
Write down the details for Gateway and DNS Server.
Turn off. Connect Modem to router. Connect PC to router.
Turn on PC. Open web browser.
If you do not get internet then enter 192.168.0.1 in browser addressbar. You will be prompted for admin user ID & Password. This gets you to the router admin interface.
Go to the WAN page and check that the WAN Gateway & DNS addresses are the same as you previously copied.
Depending on your ISP you may need to manually enter those details and may also need to clone your PC's MAC address in the router in order to connect.
Does the laptop connect by cable or wireless?
Goin' Fishin' (Some day)